OMAPDSS: panel-lgphilips-lb035q02: Add DT support

Add DT support for panel-lgphilips-lb035q02.

We disable the use of the backlight_gpio as it should be handled via
backlight framework with DT boots.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Florian Vaussard <florian.vaussard@epfl.ch>

diff --git a/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c b/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c
index 6e6acd696a7035a1c1f0a7a8a1ee5eeea1e71e8f..cc5b5124e0b4b05409c8ef11a4676bc08992b126 100644 (file)
--- a/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c
+++ b/drivers/video/fbdev/omap2/displays-new/panel-lgphilips-lb035q02.c
@@ -159,7 +159,8 @@ static int lb035q02_enable(struct omap_dss_device *dssdev)
        if (omapdss_device_is_enabled(dssdev))
                return 0;
 
-       in->ops.dpi->set_data_lines(in, ddata->data_lines);
+       if (ddata->data_lines)
+               in->ops.dpi->set_data_lines(in, ddata->data_lines);
        in->ops.dpi->set_timings(in, &ddata->videomode);
 
        r = in->ops.dpi->enable(in);
@@ -277,6 +278,35 @@ err_gpio:
        return r;
 }
 
+static int lb035q02_probe_of(struct spi_device *spi)
+{
+       struct device_node *node = spi->dev.of_node;
+       struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev);
+       struct omap_dss_device *in;
+       struct gpio_desc *gpio;
+
+       gpio = devm_gpiod_get(&spi->dev, "enable");
+       if (IS_ERR(gpio)) {
+               dev_err(&spi->dev, "failed to parse enable gpio\n");
+               return PTR_ERR(gpio);
+       } else {
+               gpiod_direction_output(gpio, 0);
+               ddata->enable_gpio = gpio;
+       }
+
+       ddata->backlight_gpio = -ENOENT;
+
+       in = omapdss_of_find_source_for_first_ep(node);
+       if (IS_ERR(in)) {
+               dev_err(&spi->dev, "failed to find video source\n");
+               return PTR_ERR(in);
+       }
+
+       ddata->in = in;
+
+       return 0;
+}
+
 static int lb035q02_panel_spi_probe(struct spi_device *spi)
 {
        struct panel_drv_data *ddata;
@@ -295,6 +325,10 @@ static int lb035q02_panel_spi_probe(struct spi_device *spi)
                r = lb035q02_probe_pdata(spi);
                if (r)
                        return r;
+       } else if (spi->dev.of_node) {
+               r = lb035q02_probe_of(spi);
+               if (r)
+                       return r;
        } else {
                return -ENODEV;
        }
@@ -346,17 +380,26 @@ static int lb035q02_panel_spi_remove(struct spi_device *spi)
        return 0;
 }
 
+static const struct of_device_id lb035q02_of_match[] = {
+       { .compatible = "omapdss,lgphilips,lb035q02", },
+       {},
+};
+
+MODULE_DEVICE_TABLE(of, lb035q02_of_match);
+
 static struct spi_driver lb035q02_spi_driver = {
        .probe          = lb035q02_panel_spi_probe,
        .remove         = lb035q02_panel_spi_remove,
        .driver         = {
                .name   = "panel_lgphilips_lb035q02",
                .owner  = THIS_MODULE,
+               .of_match_table = lb035q02_of_match,
        },
 };
 
 module_spi_driver(lb035q02_spi_driver);
 
+MODULE_ALIAS("spi:lgphilips,lb035q02");
 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
 MODULE_DESCRIPTION("LG.Philips LB035Q02 LCD Panel driver");
 MODULE_LICENSE("GPL");